L: alternate layouts keep their stories linked to the originals

Co-Authored-By: Claude Opus 5.5 <[email protected]>

ROADMAP.md

@@ -92,7 +92,7 @@ DesignCraft aims at full Adobe InDesign parity — and to be better: faster, ope
 - Power Zoom (Hand tool: press and hold still for half a second, or Alt-press): zoom out to the spread, aim the red view rectangle, release to zoom back in there.
 - Graphic cells (`table.placeGraphic`, `table.textCell`, Table › Convert Cell Type, Table panel): images in table cells, fitted or filled, clipped to the cell on screen and in PDF.
 - Live Distribute (Space while dragging a selection handle; `transform.resize {distribute}`): objects keep their size and spread with the bounds.
-- Liquid Layout (`liquid.pageRule/object`, `guide.liquid`, `layout.createAlternate`, Liquid Layout panel): scale / re-center / guide-based / object-based page rules applied on page resize and Document Setup; dashed liquid guides; alternate layouts as resized page copies in a named section. Alternate layouts aren't linked to their source.
+- Liquid Layout (`liquid.pageRule/object`, `guide.liquid`, `layout.createAlternate`, Liquid Layout panel): scale / re-center / guide-based / object-based page rules applied on page resize and Document Setup; dashed liquid guides; alternate layouts as resized page copies in a named section. Text in an alternate layout stays linked to the original stories (Links panel shows them out of date; `story.updateLink`).
 - Split Window / New Window (`window.split`, `window.newWindow`, Window ▸ Arrange): two side-by-side views of the document with their own zoom, scroll and render cache. New Window puts the second view in its own OS window (an egui viewport; a floating window on the web).
 - Transparency flattener (`file.exportPdf {flatten: high|medium|low|ppi}`, Edit ▸ Transparency Flattener Presets): each object involving transparency becomes an opaque image of its area over what's beneath it, so everything else stays vector (spreads with transparent parent items are rasterised whole).
 - Video and sound (place .mp4/.mov/.webm/.mp3/.wav…, `media.options/get`, Media panel): media frames show a poster or placeholder on screen, in print and in PDF, and export as HTML5 `<video>`/`<audio>` in EPUB. No in-app playback or PDF rich media.

crates/engine/src/cmd/liquid.rs

@@ -230,7 +230,19 @@ fn create_alternate(s: &mut crate::Session, p: &Value) -> Result<Value> {
                     g
                 })
                 .collect();
-            super::object::duplicate_from(d, &src, &ids, SpreadRef::Doc(ti), designcraft_geom::Vec2::new(to.x0 - pb.x0, 0.0))?;
+            let new = super::object::duplicate_from(d, &src, &ids, SpreadRef::Doc(ti), designcraft_geom::Vec2::new(to.x0 - pb.x0, 0.0))?;
+            // The copies' stories stay linked to the originals (Links panel: update when they change).
+            for (old, new) in ids.iter().zip(&new) {
+                let (Some(os), Some(ns)) =
+                    (src.item(*old).and_then(|i| i.text_frame()).map(|t| t.story), d.item(*new).and_then(|i| i.text_frame()).map(|t| t.story))
+                else {
+                    continue;
+                };
+                let rev = src.story(os).map_or(0, |s| s.rev);
+                if let Some(st) = d.story_mut(ns) {
+                    st.link = Some((os, rev));
+                }
+            }
         }
         let pages: Vec<usize> = (n + 1..=2 * n).collect();
         super::layout::resize_pages(d, &pages, Some(w), Some(h));
@@ -307,5 +319,11 @@ mod tests {
         assert!((bounds(&s, a).width() - 200.0).abs() < 1e-6 && (bounds(&s, b).width() - 100.0).abs() < 1e-6);
         s.execute("edit.undo", &json!({})).unwrap();
         assert_eq!(s.doc().unwrap().doc.page_count(), 1);
+        // Text in an alternate layout stays linked to the original story.
+        s.execute("edit.redo", &json!({})).unwrap();
+        let t = s.execute("frame.create", &json!({"rect": [100, 300, 300, 400], "content": "text", "text": "Original", "caret": false})).unwrap();
+        s.execute("layout.createAlternate", &json!({"name": "Tall", "width": 600, "height": 1200})).unwrap();
+        let links = s.execute("story.links", &json!({})).unwrap();
+        assert!(links.as_array().unwrap().iter().any(|l| l["parent"] == t["story"]), "{links}");
     }
 }

docs/parity.md

@@ -11,7 +11,7 @@ Each row of the InDesign feature catalogue is scored **D** (done), **P** (partia
 |---|---|---|---|---|---|
 | P0 | 102 | 100 | 2 | 0 | 99% |
 | P1 | 97 | 96 | 1 | 0 | 99% |
-| P2 | 76 | 65 | 11 | 0 | 93% |
+| P2 | 76 | 66 | 10 | 0 | 93% |
 
 | Area | Parity |
 |---|---|
@@ -79,7 +79,7 @@ Open P0 items: Vector/page formats (PDF/AI/SVG/EPS place), Export to PDF (print)
 | Documents, pages, spreads | Layout Adjustment | P2 | D |
 | Documents, pages, spreads | Adjust Layout | P2 | D |
 | Documents, pages, spreads | Liquid layout | P2 | D |
-| Documents, pages, spreads | Alternate layouts | P2 | P |
+| Documents, pages, spreads | Alternate layouts | P2 | D |
 | Documents, pages, spreads | Document grid & baseline grid | P0 | D |
 | Documents, pages, spreads | Ruler guides | P0 | D |
 | Documents, pages, spreads | Guides on layers | P1 | D |